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If I have an enum of chars, and I have a variable that contains a generic char, I may want to convert the second to an instance of the first one, safely (a normal cast is enough to do it unsafely). Is it a good idea to give this purpose to to!() (this idea is currently not implemented)?
import std.conv: to;
enum Foo : char { a = 'A', b = 'B' }
void main() {
Foo r1 = cast(Foo)'A'; // OK
Foo r2 = cast(Foo)'X'; // error undetected
Foo r3 = to!Foo('A'); // OK
Foo r4 = to!Foo('X'); // error detected
}
Bye,
bearophile

bearophile Wrote:
> If I have an enum of chars, and I have a variable that contains a generic char, I may want to convert the second to an instance of the first one, safely (a normal cast is enough to do it unsafely). Is it a good idea to give this purpose to to!() (this idea is currently not implemented)?
I believe this is exactly what std.conv.to should do. It should be the safest and recommended way to do conversions.
I have a request in for preventing removal of qualifiers:
http://d.puremagic.com/issues/show_bug.cgi?id=5307